Two Commercial Atmospheric Vent with Three Storage Tanks

TWO COMMERCIAL ATMOSPHERIC VENT WITH THREE STORAGE TANKS & RETURN CIRCULATION THIS DRAWING SHOWS A SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES; CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS.

SHUT OFF VALVE (3) UNION (3)

SHUT OFF VALVE (2)

*EXPANSION TANK RECOMMENDED TO MINIMIZE ANY PRESSURE BUILD UP IF THE WATER SUPPLY PIPING HAS A BACK-FLOW PREVENTER, CHECK VALVE OR WATER METER WITH A CHECK VALVE.

DISCHARGE TUBE (3)

TEMPERATURE AND PRESSURE VALVE (5)

UNION (3)

HOT WATER

DAMPER (2)

DISCHARGE TUBE (2)

UNION (2) SHUT OFF VALVE (3)

CONTROL BOX (2)

BACK-FLOW PREVENTER SHUT OFF VALVE

SHUT OFF VALVE

DRAIN OUTLET (2) FLOOR DRAIN (3)

SHUT OFF VALVE SHUT OFF VALVE

GAS VALVE (2) FLOOR DRAIN (2)

CIRCULATION PUMP EXPANSION TANK* SHUT OFF VALVE

SYSTEM RETURN

CIRCULATOR

WATER SUPPLY BACK-FLOW PREVENTER

DRAIN OUTLET (3)